"Passengers on routes that overfly France, especially the large airspace that covers Marseille and the Mediterranean, are also subject to delays and massive disruptions. This affects all airlines but has a significant negative impact on Spain's tourism and economy."

Michael O'Leary, Ryanair's CEO, adds: "Europe's ATC providers are reaching the point of meltdown with hundreds of flights being cancelled and delayed daily either because of ATC strikes or because Europe's ATC don't have enough staff.